I stumbled onto most of a 50’ roll of 16 gauge 1/2”x1” hardware cloth I had bought a couple years ago. Thought I’d turn it out some colony traps and wondered what everyone’s preference was. The 5”, 6” and 7” ones that slip inside each other or the collapsible style?

8x16x24 four doors with a bite bar. Was my favorite.
I like bite bars.
It would depend on my address.

I bought 4 dozen 6x6x 24 collapsibles a few years ago,they worked fine for what I am doing. I have about thirty tube traps under construction.

Prefer 12" round funnel type. Bulky, cumbersome compared to square/collapsible ones. Tried multiple sizes, shapes, materials etc. through the years. Set the funnel in a den run and pick it up the next day - all rats that travel the run are caught. Use them between beaver dams where the stream narrows. This works for me. .....................the mike

6,7,8 x 24 that nest. 5 inch are about useless, Funnel traps are to bulky, Fill the boat or pickup way to fast.

Bigger always better . If you're trying to save space, make multiple sizes that you can nest traps together.

As a guy that has to use cages in two states is….. bite me on the bite door